1) Backtest your trade method...the results will tell you when is the best time for you to trade
2) Some trade methods outperform when there's lots of volatility. In contrast, other trade methods outperform when there's very little volatility. Its your responsibility to know how your trade method performs with or without volatility prior to trade entry.
3) Be careful about making blanket statements or following rules that most losing traders because everybody doesn't use the same trade method, doesn't trade the same trading instrument and doesn't have the same daily routine.
Yet, if what you stated fits your trade method (improves the results)...keep doing it while knowing its not suitable for others.